```typescript index.ts
import { Nuapay } from 'nuapay-typescript-sdk';

const nuapay = new Nuapay({
    username: "USERNAME",
    password: "PASSWORD",
    // username: "USERNAME"
    // password: "PASSWORD"
    // username: "USERNAME"
    // password: "PASSWORD"
    // username: "USERNAME"
    // password: "PASSWORD"
})
```